DOMNode::replaceChild

(PHP 5, PHP 7)

DOMNode::replaceChild — Replaces a child

说明

public DOMNode::replaceChild ( DOMNode $newnode , DOMNode $oldnode ) : DOMNode

This function replaces the child oldnode with the passed new node. If the newnode is already a child it will not be added a second time. If the replacement succeeds the old node is returned.

参数

newnode: The new node. It must be a member of the target document, i.e. created by one of the DOMDocument->createXXX() methods or imported in the document by DOMDocument::importNode.
oldnode: The old node.

返回值

The old node or FALSE if an error occur.

错误／异常

DOM_NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly or if the previous parent of the node being inserted is readonly.
DOM_HIERARCHY_REQUEST_ERR: Raised if this node is of a type that does not allow children of the type of the newnode node, or if the node to put in is one of this node's ancestors or this node itself.
DOM_WRONG_DOCUMENT_ERR: Raised if newnode was created from a different document than the one that created this node.
DOM_NOT_FOUND: Raised if oldnode is not a child of this node.

参见

DOMNode::appendChild() - Adds new child at the end of the children
DOMNode::removeChild() - Removes child from list of children

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